Is Top "Real-Time"?

[eculbert]

Yep, just a blur on this ole 800mhz machine also.

Ed

--- Nathan England <nathan at paysonlinux.org> wrote:

> On Monday 11 December 2006 20:57, Dan Lund wrote:
> > sa & sar are totally different statistic
> generators.
> > They can't be compared to top any more than mrtg
> can be compared to
> > ifconfig. The jist is that real time means that it
> displays exactly what is
> > going on in the kernel process list at every given
> change.  I don't
> > think anything can ever do that and still able to
> be comprehended in a
> > decent amount of time.
> 
> exactley, if you run top -d .0 it's about as close
> to real time as it will 
> ever be, and it's almost incomprehensible. Atleast
> on my machine, you can't 
> tell what's happening because it's all moving so
> fast...
> 
> nathan
> 
> 
> >
> > --Dan
> >
> > On 12/11/06, George Toft <george at georgetoft.com>
> wrote:
> > > My $0.02: You are picking nits.
> > >
> > > Compared to sa & sar, top is almost instant.
> > >
> > > George Toft, CISSP, MSIS
> > > 623-203-1760
> > >
> > > Matt Nesteruk wrote:
> > > > In my post to bmike i stated that "top is not
> Real-Time".
> > > >
> > > > Edward Norton has brought to my attention that
> the Top man page states:
> > > > "The *top* program provides a dynamic
> real-time view of a running
> > > > system. It can display *system* summary
> information as well as a list 
> > > > of  *tasks* currently being managed by the
> Linux kernel."
> > > >
> > > > The reason i say top is not "Real-Time" can
> bee seen as the program
> > > > runs.  The clock in the upper right corner is
> delayed.
> > > >
> > > > Edward argued that by applying the "-d 1"
> argument that the clock would
> > > > update every 1 second.
> > > >
> > > > This is better, but it is still not
> "Real-Time".  Page re-generation is
> > > > biased on a delay clock, not changes in the
> system tasks.
> > > >
> > > > Thoughts?
> > > >
> > > > -Matt
> > > >
> > > >
> > > >
>
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